Kiln.



` Fig. 2.

Ra-SERT; W-*STEWAM QF: FINDLAY; OHIO-f f f -To` all wh'ontitmy concern:i f 'f Beit known that I, 'R'QB'ERT W. STEWART, a citizen vof theUnitedStatesf,`'residing at Findlay, in the-county o'I-Iancock and State 5'of' Ohio, have invented 'certain new. and use'- ful Improvements' inVKilns ;y and` I do hereby* 'declare the following `to -be ayf'ull,clear, and exactde'scription-of theinvention, such as will lenableothers t skilled inthe' art `to which lo ita'ppertainstomakeand usethesame. I

The .invention relateses ecially to 1What arel knownfas' f'downdr'aft-`ln's""r-fo'r burn'- ing brick, tile, products.

co'olerparts of the kiln" are 'created'. i

` 25 The invention consists ,in/theconstructionv4 hereinafter describedandclaimed, ythe claims not being limitedto the precise forms'orpro.-

portions of parts shown.v y

- `In the `accompanying drawings,f.showing go'embodimentsofthe-improvement, Figure 1 is a horizontal sectional view'onthe line 1 1,Fig.L 2 isa central vertical "sectional view through theline 1 2 3, 1,some parts beingv left in fulland'other parts broken `out.

Specification cftLetters Patent. i Application filed :December` 2,1905.,Sei'il'Nm 289,990.

pottery,` and other ceramic' 'Patented 'March 20, 1806.

'i Fig. 2, isa separate distinct one inclosed` withimthe chimney D,sothatthe heat and products'of combustlon rising'in said chimneysurround-theA chimney C. As shown in-Figs,15,v6,land 7, vthe air in theiiueC.y 1' Y products of combustion, and JG 'designates the openingfromthe kiln to said-outer chim- '.The o eration of theim rovement'. is asfollowsz he products of com ustion from the chimney' v is asingleistructure divided by a single artiytion-Wall to separatethe fluesD and butin both forms of the invention the -heat ofthe xiiu Disblank'eted -by a paralilfcolum'n of f 6ov v f f .Fdesig'natesth'e outerchimney or stack `for conveyingA away the. smoke and. Was'te65.

furnace pass up the'chimneyD and heatthat 'chimney,and therefore the airin the iue'C,y

`above the temperature of' the air in thev body and bottom of the kiln.The Warmer air rising 'throughthe chimney `,C mixes' lWith and`moderate`s the intensity of-thelheat direct', kfromthe furnace-andtherefore protects` the` Ware in the upper part'ofthe kiln, landespecially that near the chimney.` i The airfrom thel f lues C andDjthen descends through the vvare into the Cooler partsfof; the'kiln andin its descent carrie'swlth it and transmits to e the surrounding' airtheheat gained inl its ascent. Provision-` canwbe made;by 'suitablylacin the ware Within the kiln so that the eate vdescending air will'.ass through'the 'Ware nearthefloor or'throug passages under 3'5 Fig.'`Iik is' al horizontal sectional view on 'the line 22, Fig; 2-. Fig..4is-a horizontalysec- .tional view'on the line 3 3, Fig@ 2.j Fi .f5 isa vertical'section through a re-boxfan ychinaney, illustrating a4modification i consisting 'of 'the l'iioor kand return to thegchimneys,thus l r rium oftemperature' is established .throughoutthekiln;

" .I The arrangement of'alue or chimney With-` in a'chimney, as showniii-Fig. 2, so that the products of combustion from the furnacevsurround the inner lflue or chimney is referlablegbut `a` single chimneystructure.' ividedI by a partition ,into z the lsevaparate compartj'tion-wall. -'Fig. 6 is v'a horizontal section on-'- the line 44; Figf5l',Fig. 7 isa horizontal sec-"i 'tion o'n the line 5 5 Fig-. 51. Fig.8;is a verti-^ cal'isection on the line6l6`, Fig; 1. j Fig. 9 is aV'maintaining the circulation until an'equilibments, as shoWnnFigs.5,'6,f-and 7 is eni 45 horizontal section through theline 7 7, Fig. 8'.

, Intheseveral views, Eidesi'gnates thekilni, f'wall, 'A a'fiie-box or'furnace therein, and D a` chimneytherefor Vthat opens-'intothe inte--`riorl of the kiln nearthe ycrown thereof. t "C,

. 5o desiiates, a supplemental or circulating fluel i lrnne'y, and Banopening thereto atits,v

- orfc lower.eind;v f t v e The supplemental` chimney C, as lshown in''tirely practicable and maybe used.. Inthis present'application 'Iintend toclaim the in-v vention broadly and the s'pecies'an embodimentof which is shown in Fig. S2. Inan- IOO other applicationledconcurrently herewith Y I" claimk specifcally'another species ofthe-in'-k \vention.` l I. i i

It is obvious that` the ilues C ,and D need not be of exactly the sameheight and that 'the products ofcombustion can be disposed of otherwisethan by a stack F.

' That I claim, and desire to secure by Let- -ters Patent herein,is!- 1. In akiln, a chimney having separate and distinct compartments,to wit: a compartment leading from thefurnace to the interior of thekiln, vand a compartment communicating with the interior of the kilnnear Vthe. bottom thereof and discharging back into main flue the alrtherein being heated by the y the interior the kiln. v f

2. In a kiln7 a chimney having a main or fire flue that takes air fromthe exterior of the I Y kiln, and a supplemental flue adjacent to the erand lower ends with the interior of tie I iln.

In testimony whereof I` aflix Amy signature in presence of twowitnesses.

ROBERT W. STEWART.' Witnesses .i

VIOLA TEMPLE,` MINOR BRANCHLEY.

